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Bourgi R, Hardan L, Cuevas-Suárez CE, Scavello F, Mancino D, Kharouf N, Haikel Y. The Use of Warm Air for Solvent Evaporation in Adhesive Dentistry: A Meta-Analysis of In Vitro Studies. J Funct Biomater 2023; 14:jfb14050285. [PMID: 37233396 DOI: 10.3390/jfb14050285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 05/27/2023] Open
Abstract
Any excess solvent from dental adhesive systems must be eliminated prior to material photopolymerization. For this purpose, numerous approaches have been proposed, including the use of a warm air stream. This study aimed to investigate the effect of different temperatures of warm air blowing used for solvent evaporation on the bond strength of resin-based materials to dental and nondental substrates. Two different reviewers screened the literature in diverse electronic databases. In vitro studies recording the effect of warm air blowing to evaporate solvents of adhesive systems on the bond strength of resin-based materials to direct and indirect substrates were included. A total of 6626 articles were retrieved from all databases. From this, 28 articles were included in the qualitative analysis, and 27 remained for the quantitative analysis. The results of the meta-analysis for etch-and-rinse adhesives revealed that the use of warm air for solvent evaporation was statistically significantly higher (p = 0.005). For self-etch adhesives and silane-based materials, this effect was observed too (p < 0.001). The use of a warm air stream for solvent evaporation enhanced the bonding performance of alcohol-/water-based adhesive systems for dentin. This effect seems to be similar when a silane coupling agent is submitted to a heat treatment before the cementation of a glass-based ceramic.
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Affiliation(s)
- Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
| | - Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon
| | - Carlos Enrique Cuevas-Suárez
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, San Agustín Tlaxiaca 42160, Mexico
| | | | - Davide Mancino
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
- Pôle de Médecine et Chirurgie Bucco-Dentaire, Hôpital Civil, Hôpitaux Universitaire de Strasbourg, 67000 Strasbourg, France
| | - Naji Kharouf
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
| | - Youssef Haikel
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
- Pôle de Médecine et Chirurgie Bucco-Dentaire, Hôpital Civil, Hôpitaux Universitaire de Strasbourg, 67000 Strasbourg, France
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Zimmer R, Leite ML, de Souza Costa CA, Hebling J, Anovazzi G, Klein CA, Hosaka K, Reston ED. Effect of Time and Temperature of Air Jet on the Mechanical and Biological Behavior of a Universal Adhesive System. Oper Dent 2021; 47:87-96. [PMID: 34624102 DOI: 10.2341/20-038-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To evaluate the influence of heat application on the degree of conversion (DC) of the 3M Single Bond Universal Adhesive System, as well as its transdentinal cytotoxicity and microtensile bond strength to dentin. METHODS Experimental groups were established according to the time and temperature of the air jet: G1: 5 seconds-25°C; G2: 10 seconds-25°C; G3: 20 seconds-25°C; G4: 5 seconds-50°C; G5: 10 seconds-50°C; G6: 20 seconds-50°C. In control group (G7), no treatment was performed. The DC was assessed using the Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR) technique. For the transdentinal cytotoxicity test, dentin discs fitted in artificial pulp chambers (APC) received the application of the adhesive system and the air jets. For the microtensile bond strength, healthy molars were restored and submitted to the microtensile test after 24 hours and 6 months, respectively. RESULTS Significant reduction in viability of Mouse Dental Papilla Cell-23 (MDPC-23), which exhibited morphological changes, was observed in all experimental groups compared to control (p<0.05). Although all tested protocols resulted in transdentinal diffusion of 2-hydroxyethyl methacrylate (HEMA), the group G6 presented the highest degree of monomeric conversion and the lowest cytotoxic effect, with higher dentin bond strength values in comparison to group G1 (p<0.05). CONCLUSIONS Applying an air blast at 50°C for 20 seconds increases the DC and microtensile bond strength of the 3M Single Bond Universal Adhesive System to dentin, as well as reduces the transdentinal cytotoxicity of the material to pulp cells.
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Affiliation(s)
- R Zimmer
- Roberto Zimmer, DDS, MS, Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil (Ulbra), Canoas, Brazil
| | - M L Leite
- Maria Luisa Leite, DDS, MS, PhD, Department of Physiology and Pathology, Araraquara School of Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | - C A de Souza Costa
- Carlos Alberto de Souza Costa, DDS, MS, PhD, Department of Physiology and Pathology, Araraquara School of Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | - J Hebling
- Josimeri Hebling, DDS, MS, PhD, Department of Orthodontics and Pediatric Dentistry, Araraquara School of Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | - G Anovazzi
- Giovana Anovazzi, DDS, MS, PhD, Department of Orthodontics and Pediatric Dentistry, Araraquara School of Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | - C A Klein
- Celso Afonso Klein-Junior, DDS, MS, PhD, Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil (Ulbra), Canoas, Brazil
| | - K Hosaka
- Keiichi Hosaka, DDS, MS, PhD, Department of Cariology and Operative Dentistry,Graduate School of Medical and Dental Sciences,Tokyo Medical and Dental University, Tokyo, Japan
| | - E D Reston
- *Eduardo Galia Reston, DDS, MSD, PhD, Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil (Ulbra), Canoas, Brazil
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Klein-Junior CA, Sobieray K, Zimmer R, Portella FF, Reston EG, Marinowic D, Hosaka K. Effect of heat treatment on cytotoxicity and polymerization of universal adhesives. Dent Mater J 2020; 39:970-975. [PMID: 32611987 DOI: 10.4012/dmj.2019-103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To assess, in vitro, the influence of heat air treatment on cytotoxicity and degree of conversion (DC) of universal self-etch adhesives (Ambar Universal APS, Scotchbond Universal Adhesive, and Tetric N-Bond Universal) in an NIH/3T3 fibroblast cell culture. Samples were divided into three groups: 1) no heat treatment (control), 2) 37°C and 3) 60°C heat treatment before photopolymerization. Cytotoxicity was analyzed by MTT assay and the DC by FTIR. All adhesives heated at 60°C showed reduced cytotoxicity levels when compared with those heated at 37°C. In general, DC of Ambar Universal APS presented the highest DC than Scotchbond Universal Adhesive and Tetric N-Bond Universal, and the hot air treatment do not influence the conversion. Heat treatment at 60°C was able to reduce the cytotoxicity of universal self-etch adhesives, even, the heat treatment does not enhances the DC.
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Affiliation(s)
| | - Kathleen Sobieray
- Department of Operative Dentistry, School of Dentistry, Universidade Luterana do Brasil (ULBRA)
| | - Roberto Zimmer
- Department of Operative Dentistry, School of Dentistry, Universidade Luterana do Brasil (ULBRA)
| | | | - Eduardo Galia Reston
- Department of Operative Dentistry, School of Dentistry, Universidade Luterana do Brasil (ULBRA)
| | - Daniel Marinowic
- Brain Institute, Neuroscience laboratory, Pontificia Universidade Católica do Rio Grande do Sul (PUC)
| | - Keiichi Hosaka
- Department of Oral Health Science, School of Medical and Dental Science, Tokyo Medical and Dental University
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Yonekura K, Hosaka K, Tichy A, Taguchi K, Ikeda M, Thanatvarakorn O, Prasansuttiporn T, Nakajima M, Tagami J. Air-blowing strategies for improving the microtensile bond strength of one-step self-etch adhesives to root canal dentin. Dent Mater J 2020; 39:892-899. [PMID: 32448851 DOI: 10.4012/dmj.2019-299] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of different air-blowing strategies using a prototype of a newly developed clinically applicable warm air-blowing device on the microtensile bond strength (μTBS) of one-step self-etch adhesives (1-SEAs) to human root-canal dentin was evaluated. Post cavities (8 mm depth, 1.5 mm diameter) were prepared and bonded with four 1-SEAs. Air-blowing was performed using normal air (23±1°C) for 10 or 20 s; warm air (60±1°C) for 10 or 20 s; or their combination for 10 s (5 s normal, 5 s warm) or 20 s (10 s normal, 10 s warm). After filling with corresponding core materials and 24-h water storage, μTBS test was performed. For three of the 1-SEAs, combined air-blowing for 20 s significantly increased μTBS compared to other air-blowing strategies (p<0.05). This suggests that the combination of normal and warm air-blowing for 20 s can enhance solvent evaporation from 1-SEAs, thus resulting in their improved bonding performance to root-canal dentin.
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Affiliation(s)
- Kazuhide Yonekura
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Keiichi Hosaka
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Antonin Tichy
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU).,Institute of Dental Medicine, First Faculty of Medicine of the Charles University and General University Hospital in Prague
| | - Keita Taguchi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Masaomi Ikeda
- Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Medical and Dental Science and Technology, Tokyo Medical and Dental University (TMDU)
| | | | - Taweesak Prasansuttiporn
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, and Center of Excellence in Materials Science and Technology, Chiang Mai University
| | - Masatoshi Nakajima
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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Chen Y, Yan X, Li K, Zheng S, Sano H, Zhan D, Fu J. Effect of air-blowing temperature and water storage time on the bond strength of five universal adhesive systems to dentin. Dent Mater J 2020; 40:116-122. [PMID: 32863373 DOI: 10.4012/dmj.2019-280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to evaluate the air-blowing temperature and water storage time on the micro-tensile bond strength (μTBS) of five universal adhesive systems to dentin. The bond strength with two different air-blowing temperatures (60±2ºC and 23±2ºC) was measured after water storage at 37ºC for 24 h and 100 days respectively. The fracture surface on dentin side was observed by scanning electron microscope (SEM). Three-way ANOVA revealed a significant effect of universal system (p<0.001) and air-blowing temperature (p<0.001) on bond strength to dentin except water-storage time (p=0.145). The interaction within three factors was significantly different (p<0.001). It could be concluded that the μTBS of universal systems to dentin was material-depended. The higher and more stable bonding performance of universal systems on dentin could be achieved by air-blowing at 60±2ºC temperature. In addition, the quantity of voids in the adhesive layer of aceton-based universal adhesive was significantly reduced by higher temperature.
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Affiliation(s)
- Yue Chen
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Xiaoyuan Yan
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Ke Li
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Shize Zheng
- School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease.,School of Stomatology, Jilin University
| | - Hidehiko Sano
- Department of Restorative Dentistry, Division of Oral Health Science, Faculty of Dental Medicine, Hokkaido University
| | - Desong Zhan
- Department of Dental Materials Science, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
| | - Jiale Fu
- Department of Dental Materials Science, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease
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dos Santos A, André CB, Martim GC, Schuquel ITA, Pfeifer CS, Ferracane JL, Tominaga TT, Khalil NM, Radovanovic E, Girotto EM. Methacrylate saccharide-based monomers for dental adhesive systems. INTERNATIONAL JOURNAL OF ADHESION & ADHESIVES 2018; 87:1-11. [PMID: 31130758 PMCID: PMC6533006 DOI: 10.1016/j.ijadhadh.2018.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of this in vitro study was to synthesize three new methacrylate monomers based on the modification of saccharides structures (glucose-Gluc, sucrose-Sucr and chitosan-Chit) with glycidyl methacrylate, and to use them in the composition of dental adhesives. Three methacrylate saccharide monomers were synthesized and characterized by mid-IR, 1H and 13C NMR, antioxidant activity and cytotoxic effect. Monomers included: one monosaccharide - Gluc-MA; one disaccharide - Sucr-MA; and one polysaccharide - Chit-MA. Primers containing HEMA, methacrylate saccharide monomers at concentrations of 0 (control), 1, 2 or 4 wt%, 60 wt% ethanol aqueous solution (pH3.0) and initiator system were formulated. Primers were used in conjunction with a bond step and composite paste to restore caries-free third molars, and dentin bond strength (24 hours and 6 month of storage in water), and antimicrobial activity (Alamar Blue test) were tested. Degree of conversion (DC) and maximum rate of polymerization (Rpmax) of the primers themselves were also analyzed. The mid-IR, 1H and 13C spectrum confirmed the presence of vinyl group on the structure of saccharides. Chit-MA showed low antioxidant activity and did not present a cytotoxic effect. Gluc-MA and Sucr-MA possess antioxidant and cytotoxic activity, concentration dependent. In the presence of methacrylate saccharide monomers, the primers showed DC comparable to the control group, except Gluc-MA4%, Sucr-MA4% and Chit-MA1%, which showed a range of 64.6 from 58.5 %DC. Rpmax was not statistically different for all the groups (p = 0.01). The bond strength of Sucr-MA1% increased from 25.7 (±2.8) to 40.6 (±5.3) MPa after 6 months of storage. All the synthesized monomers showed some antimicrobial activity after polymerization. Gluc-MA and Chit-MA 4% and Sucr-MA 1, 2 and 4% led to decrease bacterial metabolism. Sucr-MA 1% showed better results regarding the decrease in bacterial metabolism and increasing the bond strength after 6 months of storage.
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Affiliation(s)
- Andressa dos Santos
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Carolina B. André
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Limeira Avenue, 901, Piracicaba, SP, Brazil
| | - Gedalias C. Martim
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Ivania T. A. Schuquel
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Carmem S. Pfeifer
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Jack L. Ferracane
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, 2730 SW Moody Avenue, Portland, OR, United State of America
| | - Tania T. Tominaga
- Department of Physics, State University of the Midwest, Simeao Camargo Varela de Sá Street, 03, Guarapuava, PR, Brazil
| | - Najeh M. Khalil
- Department of Pharmacy, State University of the Midwest, Simeao Camargo Varela de Sá Street, 03, Guarapuava, PR, Brazil
| | - Eduardo Radovanovic
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
| | - Emerson M. Girotto
- Materials Chemistry and Sensors Laboratories, Department of Chemistry, State University of Maringa, Colombo Avenue, 5790, Maringá, PR, Brazil
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Effect of air-blowing time and long-term storage on bond strength of universal adhesives to dentin. Clin Oral Investig 2018; 23:2629-2635. [PMID: 30327950 DOI: 10.1007/s00784-018-2656-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/20/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES To evaluate the effects of air-blowing time and storage time on microtensile bond strength (μTBS) of universal adhesives to dentin. MATERIALS AND METHODS Ninety flat dentin surfaces from extracted human third molars were bonded with three universal adhesives (Clearfil Universal Bond-CU; G-Premio Bond-GP; Scotchbond Universal Adhesives-SB). Bonded dentin surfaces were air-dried for 5 s, 15 s, or 30 s followed by resin composite built-up. Resin-dentin beams were tested with μTBS test after different storage time in distilled water (24 h and 1 year). Data were analyzed by three-way ANOVA and Duncan test at (α = 0.05). Failure mode and resin-dentin interfaces were observed using a scanning electron microscope (SEM). Specific features of fractured beams after μTBS were further observed using SEM at high magnification. RESULTS Extension of air-blowing time from 5 s to 30 s increased the 24 h μTBS of CU only. Bond strength of all adhesives significantly decreased after 1-year storage except for CU at 5 s and 30 s of air-blowing time. One-year μTBS were significantly higher when air-blowing times were extended to 15 s for SB and 30 s for CU. Air-blowing time had no influence on GP. CONCLUSION The effect of air-blowing time and storage time on resin-dentin bond was material-dependent. CLINICAL RELEVANCE Extended air-blowing time increased the bond strength and bond durability of CU. Extension of air-blowing time to 15 s and 30 s improve the long-term bond strength of SB and CU, respectively.
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Klein-Júnior CA, Zimmer R, Hentschke GS, Machado DC, Dos Santos RB, Reston EG. Effect of heat treatment on cytotoxicity of self-adhesive resin cements: Cell viability analysis. Eur J Dent 2018; 12:281-286. [PMID: 29988221 PMCID: PMC6004809 DOI: 10.4103/ejd.ejd_34_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Objective The aim of the study was to assess, in vitro, the influence on cytotoxicity of heat treatment applied before photopolymerization, while mixing three self-adhesive resin cements, in an NIH/3T3 fibroblast cell culture, based on cell viability measures. Methods Samples were divided into three groups: (1) no heat treatment while mixing (control), (2) 37°C, and (3) 60°C heat treatment while mixing. Cements were light-cured immediately after mixing and immersed in Dulbecco's Modified Eagle Media for the extraction of possibly uncured products after 24 h and 7 days. Cultures contained 0.5 mL of NIH/3T3 fibroblasts per well at a concentration of 0.4 × 105 cells/mL and specific extracts for each sample. Statistical Analysis Used Data were statistically analyzed with ANOVA and post hoc Student-Newman-Keuls (significance of 5%). Results Cement cytotoxicity increased with time, as shown by the higher values observed at 7 days. There was a slight difference in intragroup cytotoxicity levels between 24 h and 7 days. Heat treatment at 60°C was associated with a major decrease in cytotoxicity levels in all three groups, both at 24 h and at 7 days, with no differences among the cements. Conclusions Heat treatment at 60°C should be considered as a strategy to reduce cytotoxicity of self-adhesive resin cements, as evidenced by the results observed at 24 h and 7 days of analysis.
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Affiliation(s)
- Celso Afonso Klein-Júnior
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | - Roberto Zimmer
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | | | - Denise Cantarelli Machado
- Neuroscience Department, Brain Institute, Neuroscience Laboratory, Pontifical Catholic University of Rio Grande do Sul, Rio Grande do Sul, Brazil
| | - Rubem Beraldo Dos Santos
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
| | - Eduardo Galia Reston
- Department of Operative Dentistry, School of Dentistry, Lutheran University of Brazil, Cachoeira do Sul, Rio Grande do Sul, Brazil
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Taguchi K, Hosaka K, Ikeda M, Kishikawa R, Foxton R, Nakajima M, Tagami J. The effect of warm air-blowing on the microtensile bond strength of one-step self-etch adhesives to root canal dentin. J Prosthodont Res 2018; 62:330-336. [PMID: 29397352 DOI: 10.1016/j.jpor.2017.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE The use of warm air-blowing to evaporate solvents of one-step self-etch adhesive systems (1-SEAs) has been reported to be a useful method. The purpose of this study was to evaluate the effect of warm air-blowing on root canal dentin. METHODS Four 1-SEAs (Clearfil Bond SE ONE, Unifil Core EM self-etch bond, Estelink, BeautiDualbond EX) were used. Each 1-SEA was applied to root canal dentin according to the manufacturers' instructions. After the adhesives were applied, solvent was evaporated using either normal air (23±1°C) or warm air (80±1°C) for 20s, and resin composite was placed in the post spaces. The air from the dryer, which could be used in normal- or hot-air-mode, was applied at a distance of 5cm above the root canal cavity in the direction of tooth axis. The temperature of the stream of air from the dryer in the hot-air-mode was 80±1°C, and in the normal mode, 23±1°C. After water storage of the specimens for 24h, the μTBS were evaluated at the coronal and apical regions. The μTBSs were statistically analyzed using three-way ANOVA and Student's t-test with Bonferroni correction (α=0.05). RESULTS The warm air-blowing significantly increased the μTBS of all 1-SEAs at the apical regions, and also significantly increased the μTBS of two adhesives (Estelink and BeautiDualBond EX) at coronal regions. CONCLUSIONS The μTBS of 1-SEAs to root canal dentin was improved by using warm air-blowing.
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Affiliation(s)
- Keita Taguchi
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiichi Hosaka
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Masaomi Ikeda
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ryuzo Kishikawa
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Richard Foxton
- King's College London Dental Institute at Guy's, King's and St Thomas' Hospitals, King's College London, London, UK
| | - Masatoshi Nakajima
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Junji Tagami
- Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Costa DM, Somacal DC, Borges GA, Spohr AM. Bond Capability of Universal Adhesive Systems to Dentin in Self-etch Mode after Short-term Storage and Cyclic Loading. Open Dent J 2017; 11:276-283. [PMID: 28839476 PMCID: PMC5543700 DOI: 10.2174/1874210601711010276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/26/2017] [Accepted: 05/15/2017] [Indexed: 11/25/2022] Open
Abstract
Objective: The aim was to evaluate, in vitro, the tensile bond strength to dentin of Scotchbond Universal (SU), All-Bond Universal (AU) and One Coat 7 Universal (OC7) adhesives applied in self-etch mode, after 24 h of storage and after 500,000 loading cycles, using Clearfil SE Bond (SE) as a control. Materials and Methods: The adhesives were applied on the dentin of bovine teeth, followed by the application of a composite resin. Thirty specimens were obtained for each adhesive. Half of the specimens were submitted to cyclic loading for 500,000 cycles. All specimens were submitted to a tensile bond strength test in a universal testing machine at a crosshead speed of 0.5 mm/minute. Results: According to two-way ANOVA and Tukey’s test (α=5%), the interaction between the adhesive and cyclic loading factors was significant (p=0.001). The means followed by the same letter represent no significant difference in the bond strength (MPa) after 24 h: OC7=7.86A (±2.90), SU=6.78AB (±2.03), AU=5.61BC (±2.32), and SE=3.53C (±1.89). After cyclic loading, SE, SU and AU maintained bond strength comparable to 24 h period. There was a significant decrease only for OC7. Conclusion: SU, AU and OC7 had bond strength to dentin comparable to that of SE. Only OC7 had decreased bond strength to dentin after cyclic loading.
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Affiliation(s)
- Daniele Morosini Costa
- Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Deise Caren Somacal
- Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Ana Maria Spohr
- Department of Dental Materials, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
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CARVALHO MPM, ROCHA RDO, KREJCI I, BORTOLOTTO T, BISOGNO FE, SUSIN AH. Influence of a heating device and adhesive temperature on bond strength of a simplified ethanol-based adhesive system. REVISTA DE ODONTOLOGIA DA UNESP 2016. [DOI: 10.1590/1807-2577.07315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction Increased adhesive temperature has been reported to promote solvent evaporation, reduce viscosity, and improve monomeric permeation into dentin. Objective The aim of this study was to determine the influence of different heating methods on the microtensile bond strength of an etch-and-rinse adhesive to dentin. Material and method Twenty-four caries-free extracted human third molars were transversally sectioned to expose a flat dentinal surface. The samples were etched with 37% phosphoric acid gel and divided into three groups (n = 8): 1) Control - the adhesive system (Adper Single Bond 2; 3M ESPE) was applied at room temperature; 2) Warming device - the adhesive was warmed to 37°C in a custom device before application; and 3) Warm air - the adhesive was warmed to 50°C with an air jet after application on dentin. The specimens were restored with a composite resin (Filtek Z250 A2, 3M ESPE) and prepared for microtensile bond strength testing, after 24 h in water storage. The data were subjected to one-way ANOVA and Tukey's test (p < 0.05). Result There was no significant difference among the groups (p > 0.05). The mean bond strength values in the control, the warming device, and the warm air groups were 48.5 (± 5.2), 40.35 (± 4.9), and 47.2 (± 5.3) MPa, respectively (p = 0.05). Conclusion The different heating methods had no significant influence on the immediate microtensile bond strength of an etch-and-rinse ethanol-based adhesive to dentin.
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Seraj B, Ehsani S, Taravati S, Ghadimi S, Fatemi M, Safa S. Fracture resistance of cementum-extended composite fillings in severely damaged deciduous incisors: An in vitro study. Eur J Dent 2014; 8:445-449. [PMID: 25512722 PMCID: PMC4253097 DOI: 10.4103/1305-7456.143614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective: The aim of this study was to comparatively assess the fracture resistance of the cementum-extended and conventional composite fillings with or without intracanal composite posts in severely damaged deciduous incisors. Materials and Methods: This in vitro study was performed on 60 extracted deciduous maxillary incisors that were randomly divided into four groups: Group 1: Composite filling (CF); Group 2: Composite filling with composite posts (CF + CP); Group 3: Composite filling extended 0.5 mm to cementum (ceCF); Group 4: Composite filling extended 0.5 mm to cementum with composite posts (ceCF + CP). The fracture resistance was assessed by exerting a progressively increasing load with a cross-head speed of 0.5 mm/min in a Universal Testing Machine. Statistical Analysis: Data were analyzed by SPSS-18 using one-way analysis of variance at α < 0.05. Results: The mean fracture resistance (MFR) values of the experimental groups were 410.57 ± 139.44 N, 564.44 ± 92.63 N, 507.5 ± 76.37 N and 601.08 ± 96.04 N. A significant difference was found between the MFR of Groups 1 and 2, Groups 1 and 4 and Groups 3 and 4 (P < 0.05). Conclusion: A superior outcome was achieved by intracanal composite posts in both conventional and cementum-extended composite fillings.
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Affiliation(s)
- Bahman Seraj
- Dental Research Center, Department of Pediatric Dentistry, Tehran, Iran
| | - Sara Ehsani
- Dental Student's Scientific Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Shirin Taravati
- Department of Pediatric Dentistry, School of Dentistry, Babol University of Medical Sciences, Babol, Iran
| | - Sara Ghadimi
- Laser Research Center of Dentistry, Department of Pediatric Dentistry, Tehran, Iran
| | - Mostafa Fatemi
- Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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